Even people working reputable mom-and-pops retail jobs know the reputation of retail due to very real high-pressure sales techniques (esp. at car dealerships). Those techniques are undeniably "sigh-able," and reputable retail shops spend a lot of time and energy to distinguish themselves to their potential customers and distance themselves from that ick.
Crypto also has an ick from its rich history of scams. I feel silly even explicitly writing that they have a history rich in scams because everyone on HN knows this.
I could at least understand (though not agree) if you raised a question due to your knowledge of a specific cryptocurrency. But "Why sigh" for general crypto tie-in?
I feel compelled to quote Tim and Eric: "Do you live in a hole, or boat?"
Edit: clarification